Heronsburgh 1965, written by Martin Russell, will be launched at Jean’s Bothy on August 23 at 2pm.
The event will be introduced by Graham Morgan, a respected mental health advocate and writer.
Tickets are free to book at eventbrite.co.uk.
Mr Russell said: “It was about the mild-mannered shopkeepers of the town in the 1960s.
“The book takes that a stage further as a work of fiction based on my memory of the town I grew up in.
“I hope it will appeal to the folk of the town today.”
Although entirely fictional, the novella is rooted in the humour, warmth, and quirks of small-town life.
Martin said: “The characters are imaginary, although some were inspired by actual people.
“The events are purely fictional.
“The ultimate theme is redemption – how people can change for the better, forgive others, and redeem themselves.”
Launching the book at Jean’s Bothy holds personal significance for Martin.
He said: “I’m delighted to be launching my wee book at Jean’s Bothy as I am diagnosed with bipolar disorder, as was my late mother.
“There is, I hope, an inspiring mental health storyline running the length of the book.”
The cover also carries a story.
He said: “I got permission from the Science Museum in London to adapt a 1941 LNER poster by Frank H.
“Mason showing the town from the Clyde.
“It’s very recognisable, but not quite real – just like the book.”
The novella features a fictional version of the Helensburgh Advertiser, renamed The Heronsburgh Enquirer.